Process of manufacturing gas from coal.



B. THIBMIGHL PROOESS 0F MANUIAGTURING GAS PROM GOAL} ,AEPLIOATION FILED my 16, 1908. v

- Patnted' Feb; 16, 1909.

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UNITED sTAtr s PATENT cr mes.

BERNHARD THlEMICH, OF DRESDEN-NAUSSLI TZ, GERMANY.

'rnocnss OF MANUFACTURING GAS FROM COAL.

Specification of Letters Patent.

Patented Feb. 16, 1909 V Application filed May 16-, 1908. Serial No. 433,305.

manufacturing from coal, without the use of gas-generating plant, gas suitable for actuating internal"combustion engines.

carried out the The annexed, drawing serves merely to illustrate the manner in which the process is construction of the appara 'tus may be variedfin many ways.

FiguresjLandQ show a simple form of apparatus joined tothe cover of the enginecylinder, F ig. l being a sectional side-view and Fig. 2a front View partly in section.

Theiprinciple of the process lies therein that the heating of the pulverized coal, and the separation of tl1e.gas,,takes" place on a heated surface or surfaces in the absence of air, so that nocombustion can take place, the coal being pressed against the heating surface to accelerate the process, and the feed being so re ulated that before the supply of fresh coal, or at the time of the said supply, the coke is removed from the heating surface, so that the area of the latter may. be as small as possible. Owing to'this method of regulating the supply, with which the gas is generated, the gas can be generated at the rate at which it is sucked into the engine by the piston, so that the engine can be stopped at any time without "I haying a residual amount of gas unused. 40-

This is an'advantage from the point of view of economy, and it also lessens the danger of ex lesion.

eferringto Figs. 1 and 2,. a is the chamber onthe-wall-surface of which the heating of the coal and the generation of the gas take place. The interior of this, chamber communicates by a port 6, with the interior of the power-cylinder; The chamber a is heated by the products of combustion. The

engine may be started by means of benzene and to the rapidityor' other fuel. When the chamber afis suilt ciently hot the shafts Z of two feed-rollers c are coupled to the engine, so that the rollers are rotated. Coal from the channel m is then intermittently fed by these rollers to the nozzle f and falls on to the red-hot wall of the chamber'a. rolled over this wall from left to right by A roller 9 is then means of a rod it. The right-hand end position of the roller 9 is indicated in Fig. 2 by a dotted circle. The roller g spreads. out the coal in a thin layer and presses it against the hot wall, so that gas is immediately gen erated The gas passes upwards through a pipe/e" and is then led tothe cylinder. The

pipe 2' may also leadto a suitable collector and scrubber or other cleanser. During the return movement of the roller g a scraper is fixed to the rod ii scrapes the coke from the heating surface and causes itto fall into a receptacle Z. repeated.

The action described is then WhatI claim as my invention and desire to secureby Letters Patent of the United j States is z- I l. The process of producing gas from pulverized coal for actuating internal combustion engines consisting. in causingthe coal to fall intermittently in measured quantities on to a heated surface, heating said surface,

pressing the coal against this surface, and

removing the residue after the separation: as, before a fresh charge of coal 1s of the supplie 2. The process of producing gas from ulverized coal for actuating internal com ustion engines consisting in causing the coal to fall intermittently in measured quantities onto a. sur'face,'hea-ting said surface by the explodedgases of the engine, pressing it a ainst this surface,-and removing the resic ue after the separation of the gas, before a fresh charge of coal is supplied, and delivering the gas to the engine.

In witness'whereof I have signed this specification in the presence of two Witnesses. BERNHARD THIEMICH.

Witnesses:

H R TACK, RUDOL H FRICKE. 

